20
Sweden just announced this and it's going to take them over 20 years assuming no delays. By the time these reactors come online how expensive will solar + storage be? Because if it's cheaper then you now have a nice expensive asset producing something nobody wants to buy because they can get it cheaper elsewhere.
Don't get me wrong, I think when it comes to moving away from fossil fuels all options should be on the table but nuclear definitely is no silver bullet. I'd be interested to see the analysis though, maybe I'm wrong but my understanding is it's already more expensive than the alternatives.